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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4d907c004e1c72c7e30bc291145de2cbb09ff2e577db9aa35ceae588c8c3f132' 
  AND token = 'EFwnqQ2gZOsaNNoKD6Ucsd+1G2J0T3iNJLllukchDeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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