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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95ac9b2abca1f80f715953d7023b08b24c88b8017df900eed2242cf92b5d766f' 
  AND token = 'v/djL8vkMcEQ1uyK0GfaXEDmKFAyh/3S850gsvyRkRk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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