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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0cc22c0a2d72b9b77b0c25715a73abf377dc75d77923c0ef5d08627420364d47' 
  AND token = 'HI91V9lJFKtH8l3lD59485fC27jBBSZQFcRcg7asYYM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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