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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80700e6f358e6790366be458b734327f8929025b6963b5913cf3a914c0a29097' 
  AND token = 'xKQ674QNKota9aaK1KrbXD+2uIjCkNmKXIIWnai5ldA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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