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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e9e2f58ffe5010e03a1e52b0c65c01572375bffa19dd8472a2a0a9639b3b7cd5' 
  AND token = '3Xl9o1p85oCfk9cxmZFtf6gP6i+9mxWB32hEx8GEMu4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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