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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c3224bc493c02652b60652b3b82cd400d82a59d230bc13ca2d438106728aaeaf' 
  AND token = 'IXsP/o5hfWvOgal7adKk6NEJKG4G8XL0M/CpMJX59ts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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