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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '43e937d30761315c67b3d388dcf27c0720738717046ec78b6703fac59c4c3d64' 
  AND token = 'lboc3OiFW7g4vztLqx/QyszSUKEPoX29q6Ce+zHO6rs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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