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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05f52069743fce9d18860787be2ee24e009b23ed7acc619d359597ca9a52d9f1' 
  AND token = 'Pz2bWs+byW3ZpzCPy0noAcuAReyXniRwdEfVbQoaTYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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