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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7720ba7ed8dd9853fc46a890ec7c2f515a2277b9a19995710076ff242c8d7ac' 
  AND token = 'mf3ryZILKYlgDI/y+L73eV3wF29u0NiuyuHErf0mlVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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