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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0575b5772a2ee7d219841975a53f0686fe74a06d89bdf5ab4af5ee81d263ed0b' 
  AND token = 'Nu361l/U3hgSpHdJ3nCvdkVNQ6qHnC4jc9gwOsu22qA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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