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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b781129e07d2455102588144df204ad9fbf366d4102cd4aae94e55b11ae06e85' 
  AND token = 's7/3J7bZtyRDJDaqKYQNPcugc+C1nyEWU6F2z/J5xs8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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