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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '655c4b5e4a21bde28781f40a4f127b655b3c853b8a792c80faa9cf10521d0c39' 
  AND token = '7uvAk4j+cpKZcSr9NmyJHH7a6ikx/7/cAKD6erGs7qI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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