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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3bf09e9044d842a7b2cead8ee21ce5d9dfa94a748d3f62e8bfa035d979daadc9' 
  AND token = 'TdOEr7Kfu7ev77fDij6MocodNRJNtH6gnKcrziG0+Ws=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}