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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1711983724965d487c6c0de6d8964932e70ea65d96a82a6607a6499089d4d2be' 
  AND token = 'MlVfLvnMoczkifxqK5Jt3P0WN4ZF4Si9V3lkl5TBrX0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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