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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb9383464cee7b58c7a3fd8c53180b8d54c22d368702df3e0aa700726fd6348f' 
  AND token = 'x76ik4BcDX7kuPu5BSInzSg594i+eD+XTdMn+UwqVZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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